#103A5B#103A5B

#103A5B is a dark, moderate cyan. Relative luminance 0.039; OKLCH L 33.8% C 0.074 H 246.4°. Best body text is #FFFFFF at 11.81:1 contrast (WCAG AA passes).

Color values

HEX#103A5B
RGBrgb(16, 58, 91)
HSLhsl(206, 70%, 21%)
HSVhsv(206, 82%, 36%)
CMYKcmyk(82.4%, 36.3%, 0%, 64.3%)
CIE-LABlab(23.31, -1.30, -23.81)
CIE-LCHlch(23.31, 23.85, 266.89°)
OKLaboklab(33.78% -0.0295 -0.0677)
OKLCHoklch(33.78% 0.074 246.4)
XYZxyz(3.6143, 3.8912, 10.4561)
Luminance0.0389 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#103A5B #5B3110
analogous
#105B56 #103A5B #10145B
triadic
#103A5B #5B103A #3A5B10
tetradic
#103A5B #56105B #5B3110 #145B10
square
#103A5B #56105B #5B3110 #145B10
split-complementary
#103A5B #5B1014 #5B5610
monochromatic
#05111A #071927 #103A5B #195B8F #227CC3

Accessibility & contrast

On white

11.81
#103A5B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.78
#103A5B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103A5B
11.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##103A5B#FFFFFF#000000##FFFFFF
##103A5B1.0011.811.7811.81
#FFFFFF11.811.0021.001.00
#0000001.7821.001.0021.00
##FFFFFF11.811.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2B3B5C
Deuteranopia (green-blind)
#20345A
Tritanopia (blue-blind)
#004246
Achromatopsia (no color)
#383838

Design tokens & code

CSS
--color: #103a5b;
/* rgb */ color: rgb(16, 58, 91);
/* oklch */ color: oklch(33.8% 0.074 246.4);
Tailwind
colors: {
  custom: {
    50: '#5b6f89',
    500: '#103a5b',
    950: '#000000',
  },
}
SCSS
$custom: #103a5b;
$custom-light: #5b6f89;
$custom-dark: #000000;
JSON
{
  "hex": "#103a5b",
  "rgb": {
    "r": 16,
    "g": 58,
    "b": 91
  },
  "hsl": {
    "h": 206.4,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.33776,
    "c": 0.07383,
    "h": 246.4
  },
  "luminance": 0.03892
}

Semantic roles & 50–950 ramp

primary
#103A5B
secondary
#945E33
accent
#893BED
background
#F5F6F8
surface
#E9ECF0
border
#C5C7CB
text
#04070B
muted
#797A7C

Preview Lab

Preview with #103A5B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →

#103A5B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva